code: def test_list():
      fonts = TextClip.list("font")
      assert isinstance(fonts, list)
      assert isinstance(fonts[0], str)
  
      colors = TextClip.list("color")
      assert isinstance(colors, list)
      assert isinstance(colors[0], str)
      assert "blue" in colors
  
file_path: moviepy/tests/test_TextClip.py
imports: import os
  import numpy
  import pytest
  from moviepy.video.fx.blink import blink
  from moviepy.video.VideoClip import TextClip
label_desc: Use image node_id 1 for calling a global function with example usage: test_list() without return types